I Need Help With Some Information

I read somewhere about a survey or study about how the less Religious a country is, the more peaceful it is. I think it was called the Pew Global Peace Index or something like that. I know it has do with Pew, but whenever I tried to look up the diagram of this information, I end up with nothing.

So if anyone has a link to this information and could send it to me, I would greatly appreciate it :)

Here's something close, although it's neither free nor from Pew. It's a paper from the 90s that shows people living in war zones are more prone to superstition. They found a psychological tendency that essentially means the less control you have over your life situation, and the more threatening your situation, the more likely you are to engage in prayer and employ things like good luck charms. Here is a similar paper that finds those who lack control are more likely to perceive illusory patterns where none actually exist.

More recently there's a National Opinion Research Center (NORC) paper that examined religiosity and (among many other factors) happiness, although that wasn't the primary focus.

You might also get a list of happy countries and compare it to the list of irreligious ones, bearing in mind that correlation is not necessarily causality.